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In all the world, Ngoi (Ngoi
, งอย
, ง่อย) is a rare unisex forename. The forename Ngoi is habitual in Malaysia, where it is a rare unisex name, Singapore, and Tanzania, where it is a rare boy's name. Measured by absolute frequency, the name is most common in Vietnam, China, and Tanzania. More frequently, Ngoi is the last name as well as the forename.